66457708 has 12 divisors (see below), whose sum is σ = 117015640. Its totient is φ = 33024672.

The previous prime is 66457693. The next prime is 66457751. The reversal of 66457708 is 80775466.

66457708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66457708² = 8833253905226528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50313 + ... + 51616.

Almost surely, 2^66457708 is an apocalyptic number.

It is an amenable number.

66457708 is a deficient number, since it is larger than the sum of its proper divisors (50557932).

66457708 is a wasteful number, since it uses less digits than its factorization.

66457708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102096 (or 102094 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 66457708 is about 8152.1597138427. The cubic root of 66457708 is about 405.0560467068.

The spelling of 66457708 in words is "sixty-six million, four hundred fifty-seven thousand, seven hundred eight".